Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002sf2a.conf...41b&link_type=abstract
SF2A-2002: Semaine de l'Astrophysique Francaise, meeting held in Paris, France, June 24-29, 2002, Eds.: F. Combes and D. Barret,
Astronomy and Astrophysics
Astrophysics
Scientific paper
The new X-ray satellites, XMM-Newton and Chandra, have begun to give us a new vision of clusters of galaxies and their dynamical status. Hydrodynamical simulations show that a merging event strongly changes the physical characteristics of the intracluster medium, and in particular that the temperature structure is a good indicator of cluster formation history through merger events. Many galaxy clusters show signs of substructure. X-ray spectro-imaging observations are well suited to deeper investigation of the dynamical processes behind this substructure. We present two targets from our XMM-Newton guaranteed time programme: A3921, an off-set merger between a main cluster and a smaller subcluster, and the bimodal cluster A1750. In both clusters we detect a complex temperature structure indicating interaction in the merging direction. The comparison between simulations and X-ray data suggests that the subcluster in A3921 is at the distance of closest core passage. Moreover, optical observations suggest a possible 3 body interaction. The temperature structure of A1750 and the lack of gas distorsion in the region of interaction give support for an early phase of merger, before core passage.
Belsole Elena
Bourdin Herve
Ferrari Cecile
Pratt Gabriel
Teyssier Romain
No associations
LandOfFree
XMM-Newton observations of merging clusters of galaxies: comparison with numerical simulations does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with XMM-Newton observations of merging clusters of galaxies: comparison with numerical simulations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and XMM-Newton observations of merging clusters of galaxies: comparison with numerical simulations will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1200877